Re: Yet another Samsung 305T post - black screen w/backlight, occasionally works

Did you manage to fix this? I have a unit with the same problem, I suspect that it may be the EEPROM either on the TCON or the Mainboard

Re: Sharp PN-LE701 turns itself on




How did you replace and program the NAND chip? Did you just solder on a blank NAND chip and flash the firmware?

Thanks!...

Re: Lenovo Thinkpad W530 CPU VCORE STRANGE ISSUE

It does not seem to make a difference when heating the GPU. The past day, I actually managed to use the schematics to disable the GPU. I have removed the inductors that provide GPU Vcore and the GPU no longer heats up on boot. However; the symptoms are still the same, requiring parts of the board to be bent for it to boot up on the integrated graphics.

Re: Lenovo Thinkpad W530 CPU VCORE STRANGE ISSUE

This board has a socketed CPU so I'm not sure how a BGA failure would occur. I have tried multiple CPUs with the same symptoms.

The board also has a K1000M GPU. Could a failure on the GPU cause it to not have VCORE and shut down like this?

Would love some advice from the true professionals on this thread!

I have a W530 Thinkpad which has a puzzling issue that I've spent the week troubleshooting.

The laptop would refuse to start up unless the board was slightly pressed down in a certain area. I spent a very long time trying to pinpoint where to push on the board and pushed on various components to see if it was a contact issue. The location couldn't really be isolated.

When it refused to start, CPU VCORE would not come on. The Discrete GPU VCORE Power Good comes up along with the PCH Power Good...

Re: New Members - please post your introductions here

Looking to learn more about repairs. Been repairing monitors since I was a kid and would love to learn more from the knowledgeable people on this forum.